After striking one of her dancers in the face last fall, Disney star Demi Lovato left the Jonas Brothers tour to deal with “personal issues.” The 18 year-old talks to Elle about the violent incident that led to her stay at a treatment facility.

"When you punch someone on a plane, enough is enough," Demi says in the magazine’s September issue. "I was completely out of line all summer… Just the worst attitude — totally ungrateful."

She also shoots down rumors that her issues were due to her breakup with Joe Jonas: "I wouldn't credit my meltdown to a guy,” the starlet says. “There was so much other stuff in my life."

The singer also discusses the infamous “cutting” photos, 2008 shots from Miley Cyrus’s Sweet Sixteen red carpet in which you can see red marks on Lovato’s wrists. “I don’t think I would have been ready to talk about [my problems] then, but I could’ve come up with something better than gummy bracelets,” she says of her PR’s spin on the pics, that the indents were from bracelets.

Despite her troubles, the teen phenom is bouncing back, with new single "Skyscraper" topping the charts and a third album due out this September.

"I'm going to mess up, and I'm not going to be perfect," she told AOL Music of her recovery. "But as long as I try every day to get better and better myself, then I'm one step ahead of where I was before."

cutters only show scars when they want pity attention.... she most likely gave herself deep scratches for shock as a way to ease into the 'she has problems' spotlight. cant disney girls do better for their fifteen?